Create installer for MacOS

[hohwille]

As a Mac user, I want to have a simple installer for IDEasy so that I get guided through the installation and cannot get it wrong.

Analog to #420 we want to have the same thing for MacOS (Installer with the same checks and screens)

• license agreement
• installation location defaulting to ~/projects (due to MacOS permission restrictions home directory seems the best default)
• Installation with
  • Extending PATH with :$IDE_ROOT/_ide/bin
  • Setting IDE_ROOT to $IDE_ROOT
  • extending ~/.bashrc like described in #420
  • install workflows for Finder integration

For the integration workflows see old devonfw-ide solutions:

• https://github.com/devonfw/ide/tree/master/scripts/src/main/resources/system/mac/terminal/Open_devonfw-Terminal_here.workflow
• https://github.com/devonfw/ide/tree/master/scripts/src/main/resources/system/mac/iterm/Open_devonfw-iTerm_here.workflow (only if iterm2 is installed)